I’m from India and don’t suggest me Google SMS channels. They are down now. Any other way?
try using IFTTT.
IFTTT might be able to help you. I don't use Twitter but I 'push' my email to my phone that way. Completely free and versatile.
https://www.2-waysms.com/?page=delta - one time 49 Euro fee.
http://gupshup.me/ - ?
gupshup.me is also down. and I want free service. Though seems like I've to change the sim.
Twitter via SMS FAQ
How to Tweet with Your Phone If Your Carrier Is Not Listed
If your carrier is not listed, you will not be able to receive tweets via your cell phone, but check the page again every few weeks to see if your carrier has been added.
[How to] Send / Receive Tweets via local SMS!
Thanks for your response though I've checked all that twitter help before. That's of no use. Twitter failed. And I don't want 1) to check a page again again to check for updates regarding my carrier 2) to send tweets. I only want to receive them. All those links are sorry but of no use.